Clement of Alexandria The Instructor Book I And the third department of counsel consists of what is future, by which we are bidden guard against what is to happen; as also that was said, "They that fall into sins shall be cast into outer darkness, where there shall be wailing and gnashing of teeth,"[239] Tertullian On the Resurrection of the Flesh -not even a hair, as also not an eye nor a tooth. And yet whence shall come that "weeping and gnashing of teeth,"[236]